301 lines
6.8 KiB
C
301 lines
6.8 KiB
C
#include "easycsv_p.h"
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#include "easycsv_error.h"
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/* int */
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/* _easycsv_update(_easycsv *csv) */
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/* { */
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/* /\* ARGS CHECK *\/ */
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/* if (csv == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_NULLCSV); */
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/* return -1; */
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/* } */
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/* /\* ARGS CHECK *\/ */
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/* /\* Set temp file to read binary *\/ */
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/* if (freopen(csv->tmpfp, "rb", csv->temp) == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_REOPENFAIL); */
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/* easycsv_free(csv); */
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/* return -1; */
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/* } */
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/* /\* Set file to write binary *\/ */
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/* if (freopen(csv->fp, "wb", csv->file) == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_REOPENFAIL); */
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/* easycsv_free(csv); */
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/* return -1; */
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/* } */
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/* /\* Copy entire file *\/ */
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/* char buf[BUFSIZ]; */
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/* size_t size; */
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/* while (size = fread(buf, 1, BUFSIZ, csv->temp)) { */
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/* fwrite(buf, 1, size, csv->file); */
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/* } */
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/* /\* Set temp file back to write *\/ */
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/* if (freopen(csv->tmpfp, "w", csv->temp) == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_REOPENFAIL); */
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/* easycsv_free(csv); */
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/* return -1; */
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/* } */
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/* /\* Set file back to read *\/ */
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/* if (freopen(csv->fp, "r", csv->file) == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_REOPENFAIL); */
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/* easycsv_free(csv); */
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/* return -1; */
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/* } */
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/* return 0; */
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/* } */
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/*** Accès ***/
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int
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easycsv_rows(const easycsv *csv)
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{
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if (easycsv_rewind(csv) < 0) return -1;
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int rows = 1;
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char c;
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/* Go through each character in the file and count the number of new lines */
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while ((c = fgetc(csv->file)) != EOF) {
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if (c == '\n') rows++;
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}
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return rows;
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}
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int
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easycsv_columns(const easycsv *csv)
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{
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if (easycsv_rewind(csv) < 0) return -1;
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/*
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1. check if empty file
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2. check if only one column -> 0 commas
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3. if >1 column, n commas = n+1 columns
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*/
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int col = 1;
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char c;
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while ((c = fgetc(csv->file)) != '\n') {
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if (c == ',') col++;
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}
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return col;
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}
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/* char* */
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/* _easycsv_getrow(const _easycsv *csv, */
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/* const unsigned int row) */
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/* { */
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/* /\* ARGS CHECK *\/ */
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/* if (csv == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_NULLCSV); */
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/* return NULL; */
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/* } */
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/* if (row > csv->rows) { */
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/* _easycsv_printerror(csv, EASYCSV_OVERMAXROW); */
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/* return NULL; */
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/* } */
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/* if (row == 0) { */
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/* _easycsv_printerror(csv, EASYCSV_ZEROROW); */
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/* return NULL; */
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/* } */
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/* /\* END ARGS CHECK *\/ */
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/* /\* Allocate memory *\/ */
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/* char *str = malloc(BUFSIZ); */
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/* /\* Set file pointer to start *\/ */
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/* rewind(csv->file); */
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/* for (int i = 1; i < row; i++) */
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/* { */
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/* /\* skip until row is reached *\/ */
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/* fscanf(csv->file, "%*[^\n]\n", NULL); */
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/* } */
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/* /\* Grab the row and store it in str *\/ */
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/* fscanf(csv->file, "%s\n", str); */
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/* // printf("row: %s\n", str); */
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/* return str; */
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/* } */
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int
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easycsv_rewind(const easycsv *csv)
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{
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/* Check if empty file */
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if (fscanf(csv->file, "\n") == EOF) {
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easycsv_error(EASYCSV_EMPTYCSV, NULL);
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return -1;
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}
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/* Check if file is readable */
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if (csv->mode != EASYCSV_R) {
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easycsv_error(EASYCSV_UNREADABLE, NULL);
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return -1;
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}
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/* Set file pointer to the start */
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rewind(csv->file);
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return 0;
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}
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/* int */
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/* _easycsv_getcolumn(const _easycsv *csv, */
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/* const char *col) */
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/* { */
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/* /\* ARGS CHECK *\/ */
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/* if (_easycsv_checkcsvandstring_one(csv, col) < 0) */
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/* return -1; */
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/* /\* ARGS CHECK *\/ */
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/* /\* Grab str of row 1 *\/ */
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/* char *firstrow = _easycsv_getrow(csv, 1); */
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/* if (firstrow == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_ROWNOTEXIST); */
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/* return -1; */
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/* } */
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/* unsigned int commas = 0; */
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/* // printf("FIRST COLUMN: %s\n", firstrow); */
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/* /\* Find first occurance of col in firstrow *\/ */
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/* char *str = strstr(firstrow, col); */
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/* if (str == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_COLNOTEXIST); */
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/* return -1; */
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/* } */
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/* /\* Count numbers of commas following str *\/ */
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/* char *c = strpbrk(str, ","); */
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/* while (c != NULL) { */
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/* commas++; */
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/* c = strpbrk(c + 1, ","); */
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/* } */
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/* /\* no need to free c as it is already NULL at this point *\/ */
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/* // free((char*) str); apparently invalid pointer */
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/* // printf("ROW: %i\nCOL: %i\n", row, csv->cols - commas); */
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/* /\* */
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/* #ifdef EASYCSV_DEBUG */
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/* printf("[%i] rcv_commas: %i\n", clock() - csv->start, commas); */
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/* #endif */
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/* *\/ */
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/* free(firstrow); */
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/* return csv->cols - commas; */
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/* } */
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/*
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int _easycsv_checkifvalue(struct easycsv *csv, const int col, const int row)
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{
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const char *rowstr = _easycsv_getrow(csv, row);
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return 0;
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}
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*/
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/* char* */
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/* _easycsv_getvalueinrow(const _easycsv *_priv, */
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/* const char *row, */
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/* const unsigned int col) */
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/* { */
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/* size_t st; */
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/* char *pch = NULL; */
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/* /\* If not first column *\/ */
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/* if (col != 1) { */
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/* /\* Get first occurance of comma in str, */
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/* the first value is ommited but not the comma *\/ */
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/* char *pch = strpbrk(row, ","); */
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/* /\* Repeat until desired col is found *\/ */
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/* for (int i = 2; i < col; i++) { */
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/* pch = strpbrk(pch + 1, ","); */
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/* } */
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/* } */
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/* /\* Get span from start of string to first occurence */
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/* of comma *\/ */
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/* st = strcspn(pch + 1, ","); */
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/* /\* If 0, no string exists! *\/ */
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/* if (st == 0) { */
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/* _easycsv_printerror(_priv, EASYCSV_EMPTYVALUE); */
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/* return NULL; */
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/* } */
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/* char *val = malloc(st + 1); */
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/* strncpy(val, pch + 1, st); */
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/* strncat(val, "\0", 1); */
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/* return val; */
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/* } */
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/* char* */
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/* _easycsv_setcharptovalue(const _easycsv *_priv, */
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/* const char *rowstr, */
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/* const unsigned int col) */
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/* { */
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/* char *pch = rowstr; */
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/* for (unsigned int i = 1; i < col; i++) { */
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/* pch = strchr(rowstr, ','); */
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/* if (pch == NULL) { */
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/* _easycsv_printerror(_priv, EASYCSV_NULLPTR); */
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/* return NULL; */
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/* } */
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/* pch++; */
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/* } */
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/* return pch; */
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/* } */
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/* int */
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/* _easycsv_checkcsvandstring_one(const _easycsv *csv, */
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/* const char *one) */
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/* { */
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/* if (csv == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_NULLCSV); */
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/* return -1; */
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/* } */
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/* if (one == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_EMPTYSTRING); */
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/* return -1; */
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/* } */
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/* return 0; */
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/* } */
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/* int */
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/* _easycsv_checkcsvandstring_two(const _easycsv *csv, */
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/* const char *one, */
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/* const char *two) */
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/* { */
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/* if (_easycsv_checkcsvandstring_one(csv, one) < 0) */
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/* return -1; */
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/* if (two == NULL) { */
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/* _easycsv_printerror(csv, EASYCSV_EMPTYSTRING); */
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/* return -1; */
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/* } */
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/* return 0; */
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/* } */
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